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Q: Fachverband Quantenoptik und Photonik

Q 39: Posters: Quantum Optics and Photonics III

Q 39.59: Poster

Mittwoch, 11. März 2020, 16:30–18:30, Empore Lichthof

State transfer from a single photon to a quantum emitter and quantum cloning — •Marvin Gajewski, Thorsten Haase, and Gernot Alber — Institut für Angewandte Physik, Technische Universität Darmstadt, Deutschland

Achieving optimal quantum state transfer from a single photon to a quantum emitter is a highly desired task in quantum information processing. This enables conversion from flying into stationary qubits and enhances quantum computation and communication, in particular scalable communication networks. A scheme achieving this task was presented in [1]. It enables an almost perfect transfer of the information stored in the polarization degrees of freedom of a single photon onto a suitable level scheme of a single quantum emitter by exploiting the dissipation induced by spontaneous emission of photons. It has been shown that under certain assumptions, such as orthogonality of the involved photonic reservoirs, a particular balancing of the relevant photonic spontaneous decay rates is necessary.

In this contribution we generalize these investigations by dropping some of these previous assumptions, such as the orthogonality of the coupling and background modes involved. Within this more general scenario it is explored to which extent imperfect quantum cloning is possible due to information leakage into the state of the spontaneously emitted photon.